Abstract: A bellows seal valve includes a pressurization port that can be used to apply a compensating pressure to the “atmosphere” side of the bellows, i.e. the side of the bellows that is opposite to the process fluid. The atmosphere side can be on the interior or exterior of the bellows. The compensating pressure can be greater than the process fluid pressure, to ensure that any leakage will be of pressurizing fluid into the process fluid or into the environment, and that no process fluid will escape into the environment. The pressure or flow rate of the pressurizing fluid can be monitored to detect bellows and packing leaks. A pressurizing fluid exit port can be provided, so that the pressurizing fluid can be circulated through the valve, thereby moderating the bellows temperature under conditions of extreme process fluid temperature.

Abstract: The invention relates to a shut-off valve for controlling flow of a pressurised gas. The shut-off valve comprises a body defining a passage extending between a gas inlet channel and a gas outlet channel, and a sealing element arranged to, in a first position, close the passage, and in a second position, open the passage to allow gas to flow between the gas inlet channel and the gas outlet channel through the passage. The invention also relates to a method for controlling flow of a pressurised gas by means of a shut-off valve.

Abstract: A fluid control valve with mechanical switch is a tube body having a seat portion in the through hole. A rod body passes through the bore of the seat portion, with two ends of the rod body provided with a block member and a valve plate, respectively. The rod body has an elastic member between the seat portion and the block portion, and another elastic member between the seat portion and the valve plate. The rod body further includes an adjustment member for adjusting the compression level of at least one elastic member, so as to adjust the prestress difference between the two elastic members, thereby adjusting the valve plate to normally open or close according to the movement of the rod body.

Abstract: A pressure valve includes a spring plate configured to be displaced by a setting spindle. The setting spindle includes an adjustment screw configured to axially displace a spindle shaft on which the spring plate is provided. The adjustment screw and the spindle shaft are configured in such a way that virtually no torque is transmitted to the spindle shaft via the adjustment screw.

Abstract: Provided is a flow regulating apparatus 100 including a flow regulating mechanism including: a flow regulation knob 3; a screw red 10 that adjusts an insertion amount of a diaphragm needle 5 into a valve hale 32; and a spring roll pin 13 that is fixed to the flow regulation knob 3, wherein the screw rod 10 includes a first male threaded portion that is fastened to a female threaded portion 9a formed on an inner circumferential surface of a cover section 5, and a through hole 10d penetrating in the direction substantially perpendicular to the center axis C and having a predetermined width in the direction of the center axis C, and the spring roll pin 13 is inserted into the through hole 10d.

Abstract: An actuator for operating a fill valve of a bottle filling machine, said actuator having a camshaft provided with a cam fork on its inner end adapted to engage cam follower means on a fill valve, and having a trip lever on its outer end adapted to engage a rotating shoulder means on a turntable of the machine, the camshaft being rotatable within a sleeve bearing, wherein a braking means comprising a helical wave spring is mounted over the camshaft to provide a desired frictional resistance to rotation of the camshaft within the bearing for preventing rotational drift of the cam fork from its desired operating position.

Abstract: The present invention provides an electronic expansion valve, comprising a leading screw, a valve needle and a valve needle sleeve. It further comprises: a washer provided in an annular groove, which is provided at the lower end of the leading screw in the circumferential direction, and a thickness of the washer is less than a width of the annular groove; the valve needle sleeve abuts against the upper surface of the washer and is fixedly connected with the valve needle; and a spring is provided between the washer and the valve needle.

Abstract: In a valve device for selectively opening and closing a flow passage formed to open on a valve seat by a valve body through a resin-made seat, a hollow portion is formed on either one of the valve body and the valve seat and receives the resin-made seat therein, the resin-made seat has a thickness so that the resin-made seat partly protrudes from the hollow portion, and when the valve body is operated to close the flow passage, the resin-made seat is compressed to bring an end surface of the valve body into contact with the valve seat.

Abstract: An adjustable valve assembly is disclosed. The valve assembly comprises a mounting portion and an adjustment assembly comprising an adjustable member threadably engaged with the mounting portion, the adjustable member adapted to change its position relative to the mounting portion when rotated and a clevis coupled to the adjustable member, wherein the position of the clevis relative to the mounting portion is adjustable by rotation of the adjustable member.

Abstract: To provide a motor-driven valve with a small number of parts, with excellent assemblage, capable of maintaining a large valve port diameter even downsized, and to prevent deterioration of housing environment due to sound caused by the impact and shortened life that are generated by collisions of closing limit stopper parts.

Abstract: A normally-closed valve having a microflow rate adjusting device includes a valve stem for opening and closing a fluid passage; a biasing device for biasing the valve stem in a direction to close the fluid passage; a piston body which is engaged in a cylinder in an air-tight manner to form a pressure chamber for moving the valve stem in a valve opening direction against the biasing device; and a stopper mechanism, provided on the cylinder, for controlling a limit of movement of the piston body in the valve opening direction. The stopper mechanism comprises a stroke adjustment member which is screw-engaged with the cylinder coaxially with the valve stem so that a position of the stroke adjustment member relative to the cylinder can be adjusted, and includes an annular tapered surface at an end of the stroke adjustment member which faces the piston body.

Abstract: A retrofit valve for primarily for use in conventional domestic, agricultural and commercial water taps. The valve has a seat (10) located in a passageway between a water inlet (11) and a water outlet (12). A spherical sealing member (13) is arranged to seal against the fluid inlet side of the seat, and a plunger (12) is provided for moving the sealing member off the seat.

Abstract: A housing (2) has an upper portion engaged with a cylindrical stopper member (20) in screw-thread fitting so as to be able to vertically advance and retract the stopper member (20). The stopper member (20) has an outer thread (20a) engaged with a nut member (21) and has an inner thread (20b) engaged with a thrust screw member (23) each in screw-thread fitting. The stopper member (20) has a stopping portion (A) which prevents the downward movement of the intermediate transmission member (25) connected to the thrust screw member (23) over a predetermined distance. This inhibits a metal diaphragm (12) from being excessively pushed to a valve seat (15). When further moving the diaphragm (12) for valve closing, the nut member (21) is loosened and at the same time the stopper member (20) is advanced downwards to thereby define a gap between a receiving portion (B) of the intermediate transmission member (25) and the stopping portion (A).

Abstract: A valve for controlling the flow of a gas in a gas burning torch comprises a housing having a flow passageway therethrough, a valve seat in the passageway, and a valve stem carrying a ball valve element for engaging and disengaging the valve seat to respectively close and open said passageway. A rotatable operating knob for displacing the valve stem is isolated therefrom by a ball thrust bearing, and the valve stem is supported in the housing for rocking movement transverse to the stem axis.

Abstract: A fluid controller comprising a valve element and a valve stem rotatably attached at its lower end to the upper end of the valve element, the valve element being movable upward or downward by rotating the valve stem to move the valve stem upward or downward. The valve element is brought into contact with and seated in a valve seat to close a fluid channel by being moved downward. The element is brought out of contact with the valve seat to open the fluid channel by being moved upward. The controller has an elastic member for biasing the valve element upward to press the element against the valve stem with a predetermined force in the vicinity of the seated position where the valve element is in contact with the valve seat.

Abstract: A bellows sealed plug valve includes a valve body having an inlet passage and an outlet passage, a valve chamber between the inlet and outlet passages. A valve plug has substantially the same shape as the valve chamber and is rotatably disposed therein. A shaft is movable linearly in response to a signal from a valve actuator. A bellows is sealingly disposed between the valve chamber and the valve actuator and means are located between the bellows and the valve plug for converting linear movement of the shaft connected to the valve actuator to rotational movement of the plug. Various means are disclosed including helical thread mechanism, clevis mechanism and rack and pinion mechanism, all for converting linear motion to rotational motion.

Abstract: An emergency valve assembly for a tank adapted to contain liquid such as for instance hazardous material, with the valve assembly including a valve head for closing the discharge port from the tank in an operative closed position of the valve head, and with a first operating unit coacting with the valve head for selectively opening the latter and a separate second operating unit coacting with the valve head for automatically closing the latter. The first operating unit has a portion adapted for accessibility from exteriorly of the tank and includes a fluid power connection to the first operating unit, for selectively supplying pressurized fluid to such operating unit; for causing opening of the valve head via such operating unit upon application of pressurized fluid thereto.

Abstract: There are provided coned disc springs and an intermediate transmission member in order between a thrust threaded member for generating the valve closing thrust and a valve body, and the intermediate transmission member is adapted to be urged by means of the coned disc springs toward the valve closing side with respect to the thrust threaded member. A contact receiving means is so arranged as to limit the movement of the thrust threaded member toward the valve closing side, and a contact receiving position of the contact receiving means is set at a midway position of the compression range of the coned disc springs. Wherein, the handle is adapted to be changed over between the handle held condition and the handle released condition by the relative movement of the intermediate transmission member with respect to the thrust threaded member.

Abstract: An exhaust valve (10), particularly for a blood pressure measuring apparatus, comprising a valve seat (31) disposed along the course of an outlet channel in a valve housing (11) and oriented toward the pressure side of the valve. A valve body (25) having the form of a slender conical frustum arranged on the pressure side of the valve seat (31) cooperates with the valve seat. Valve body (25) is urged against the valve seat (31) by a closing spring (27). To facilitate controlled release of an elevated pressure contained by the valve, a screw cap (37) is arranged on the valve housing (11) along the axial projection line of the valve body (25), and the valve body (25) is connected to the screw cap (37) through a support bearing (43). A two-stage steep thread (44,45) is provided between the screw cap (37) and the valve housing (11).

Abstract: A globe valve comprising: a control rod (70) which is movable in translation along a valve axis (XX'), handle means (90) for controlling movements of said rod in translation, a disk (74) fixed to one end of said rod; a body (12) having an inlet passage (14) and an outlet passage (16) therethrough for passing a liquid, said passages giving access to a cavity (18) which is extended via a cylindrical orifice (22) disposed along said valve axis in order to receive said rod; a cage (36) lodged inside said cavity and within which said disk is capable of being moved by axial displacement of said rod; packing (46) surrounding a portion of said rod and disposed within said cylindrical orifice; a seat (28) which is removable from said body for cooperating with said disk in a closure position, said seat having a first face defining a sealing bearing surface for cooperating with said disk and a first annular thrust bearing orifice, and a second face defining a second annular thrust bearing surface; means for defining a t

Abstract: The venting apparatus for liquid-filled systems permits accumulated air to automatically escape from the system. The venting apparatus comprises a bottom member with an internal bore containing a spring-loaded plunger movable to open and close an air venting channel, and a top member with a protective cap. The air venting channel in the bottom member communicates with air exit openings leading to the ambient atmosphere.

Abstract: A fluid proportioning diverter valve capable or selective flow control between 3 fluid ports incorporated inside an elongated valve housing is provided with a central differential diameter bore passing therethrough between the housing ends and adaptable of receiving slidably an elongated valving stem of which a first end serves as a diverter operating means substantially atop thereof while internally separated by a seal from a second stem end provided with an end seal to divert fluid valved between said ports in any flow ratio desired when the stem becomes shifted axially inside the bore to assume various positions permitting fluid flow between either a first fluid supply port means and a first fluid discharge port means entering the bore via a wall or the first fluid supply port means and a third bottom discharge port means inside a bottom closure means and defined by two extreme stem locations inside thereof while also permitting numerous other stem positions therein to feed both the first side wall and the

Abstract: An actuator has a driving piston disposed in a cylinder tube and is interlockable with a driving stem, the driving piston being normally biased resiliently downwardly, but when the driving piston is forced upwardly, it is retained against the resilient force of a retaining device. When the driving piston is forced downwardly, the retaining device is released from its retaining action, allowing the piston to descend rapidly by virtue of the resilient force, the driving piston being connected to a valve body of a valve assembly or the like.

Abstract: A gas-operated valve actuator having a gas operated motor, a mechanism for disengaging the valve's manual operation apparatus, and a device for quickly shutting off the actuator when the valve's drive shaft reaches its travel limit.

Abstract: A mixture adjusting screw in a carburetor for regulating the fuel efflux during engine idling is provided in which the end needle portion of the screw is located in the idle port of the carburetor and a spring is loaded around the rod portion of the screw to hold the screw in position after adjustment so as to maintain its proper adjustment. The screw head is covered by a plug and it is specifically shaped to inhibit easy access of the user to the screw for adjustment purposes. The air and fuel mixture formed in the low-load fuel system in the carburetor is well stirred due to the presence of the spring which is exposed to a fuel passage and is formed into an emulsion flow, allowing stabilized rotation of the engine during idling and high performance thereof in normal running.

Abstract: A metering valve having a deflectible beam for controlling fluid flow through an inlet port wherein a selected orifice disc, which may be any one of a plurality of orifice discs having different size orifices, is disposed in aligned relationship with the inlet. The deflectible beam may be carried on the orifice disc. The orifice disc may be removably secured within the valve by separable portions of the wall structure thereof. The outlet may be arranged to extend around the periphery of the orifice disc and opens to the flow chamber within the valve closely adjacent the beam to provide effective minimum axial extent of the valve. The beam deflecting structure includes a spring. One spring retainer at an outer end thereof is provided with a conical surface engaging a threaded adjusting element for minimum transfer of rotational force to the spring during the adjustment of the metering valve.

Abstract: A tamperproof lock with shock absorber for a fire hydrant. A spring is mounted at one end on the fire hydrant housing. Power transmitting means are mounted on a threaded operating rod extending within the housing chamber. Hydraulic means operatively associated with the power transmitting means prevents sudden closing of the hydrant valve. The power transmitting means transmit power to the threaded rod against the spring and the hydraulic means. A swivel plate is freely mounted on the power transmitting means for rotational movement thereon. The swivel plate has a contoured hub portion adapted to fit within an aperture within the fire hydrant bonnet. The hub portion is exposed to the exterior of the bonnet. Power means for applying power substantially along the axis of the threaded rod to move the rod against the spring and the hydraulic means are removably mounted on the bonnet.

Abstract: A tamperproof lock for a fire hydrant. A spring is mounted at one end on the fire hydrant housing. Power transmitting means are mounted on a threaded operating rod extending within the housing chamber. The power transmitting means transmit power to the threaded rod against the spring. A swivel plate is freely mounted on the power transmitting means for rotational movement thereon. The swivel plate has a contoured hub portion adapted to fit within an aperture within the fire hydrant bonnet. The hub portion is exposed to the exterior of the bonnet. Power means for applying power substantially along the axis of the threaded rod to move the rod against the spring are removably mounted on the bonnet. Means for preventing axial and rotational movement of the power means is pivotably connected thereto by means of a double pivot joint.